Without delay, let's solve this. We've got 27 and we will be multiplying it by 415, that is, adding 27 to itself 415 times.
Step 1: 0 + 27 = 27
Step 2: 27 + 27 = 54
Step 3: 54 + 27 = 81
Step 4: 81 + 27 = 108
Step 5: 108 + 27 = 135
Step 6: 135 + 27 = 162
Step 7: 162 + 27 = 189
Step 8: 189 + 27 = 216
Step 9: 216 + 27 = 243
Step 10: 243 + 27 = 270
Step 11: 270 + 27 = 297
Step 12: 297 + 27 = 324
Step 13: 324 + 27 = 351
Step 14: 351 + 27 = 378
Step 15: 378 + 27 = 405
Step 16: 405 + 27 = 432
Step 17: 432 + 27 = 459
Step 18: 459 + 27 = 486
Step 19: 486 + 27 = 513
Step 20: 513 + 27 = 540
Step 21: 540 + 27 = 567
Step 22: 567 + 27 = 594
Step 23: 594 + 27 = 621
Step 24: 621 + 27 = 648
Step 25: 648 + 27 = 675
Step 26: 675 + 27 = 702
Step 27: 702 + 27 = 729
Step 28: 729 + 27 = 756
Step 29: 756 + 27 = 783
Step 30: 783 + 27 = 810
Step 31: 810 + 27 = 837
Step 32: 837 + 27 = 864
Step 33: 864 + 27 = 891
Step 34: 891 + 27 = 918
Step 35: 918 + 27 = 945
Step 36: 945 + 27 = 972
Step 37: 972 + 27 = 999
Step 38: 999 + 27 = 1026
Step 39: 1026 + 27 = 1053
Step 40: 1053 + 27 = 1080
Step 41: 1080 + 27 = 1107
Step 42: 1107 + 27 = 1134
Step 43: 1134 + 27 = 1161
Step 44: 1161 + 27 = 1188
Step 45: 1188 + 27 = 1215
Step 46: 1215 + 27 = 1242
Step 47: 1242 + 27 = 1269
Step 48: 1269 + 27 = 1296
Step 49: 1296 + 27 = 1323
Step 50: 1323 + 27 = 1350
Step 51: 1350 + 27 = 1377
Step 52: 1377 + 27 = 1404
Step 53: 1404 + 27 = 1431
Step 54: 1431 + 27 = 1458
Step 55: 1458 + 27 = 1485
Step 56: 1485 + 27 = 1512
Step 57: 1512 + 27 = 1539
Step 58: 1539 + 27 = 1566
Step 59: 1566 + 27 = 1593
Step 60: 1593 + 27 = 1620
Step 61: 1620 + 27 = 1647
Step 62: 1647 + 27 = 1674
Step 63: 1674 + 27 = 1701
Step 64: 1701 + 27 = 1728
Step 65: 1728 + 27 = 1755
Step 66: 1755 + 27 = 1782
Step 67: 1782 + 27 = 1809
Step 68: 1809 + 27 = 1836
Step 69: 1836 + 27 = 1863
Step 70: 1863 + 27 = 1890
Step 71: 1890 + 27 = 1917
Step 72: 1917 + 27 = 1944
Step 73: 1944 + 27 = 1971
Step 74: 1971 + 27 = 1998
Step 75: 1998 + 27 = 2025
Step 76: 2025 + 27 = 2052
Step 77: 2052 + 27 = 2079
Step 78: 2079 + 27 = 2106
Step 79: 2106 + 27 = 2133
Step 80: 2133 + 27 = 2160
Step 81: 2160 + 27 = 2187
Step 82: 2187 + 27 = 2214
Step 83: 2214 + 27 = 2241
Step 84: 2241 + 27 = 2268
Step 85: 2268 + 27 = 2295
Step 86: 2295 + 27 = 2322
Step 87: 2322 + 27 = 2349
Step 88: 2349 + 27 = 2376
Step 89: 2376 + 27 = 2403
Step 90: 2403 + 27 = 2430
Step 91: 2430 + 27 = 2457
Step 92: 2457 + 27 = 2484
Step 93: 2484 + 27 = 2511
Step 94: 2511 + 27 = 2538
Step 95: 2538 + 27 = 2565
Step 96: 2565 + 27 = 2592
Step 97: 2592 + 27 = 2619
Step 98: 2619 + 27 = 2646
Step 99: 2646 + 27 = 2673
Step 100: 2673 + 27 = 2700
Step 101: 2700 + 27 = 2727
Step 102: 2727 + 27 = 2754
Step 103: 2754 + 27 = 2781
Step 104: 2781 + 27 = 2808
Step 105: 2808 + 27 = 2835
Step 106: 2835 + 27 = 2862
Step 107: 2862 + 27 = 2889
Step 108: 2889 + 27 = 2916
Step 109: 2916 + 27 = 2943
Step 110: 2943 + 27 = 2970
Step 111: 2970 + 27 = 2997
Step 112: 2997 + 27 = 3024
Step 113: 3024 + 27 = 3051
Step 114: 3051 + 27 = 3078
Step 115: 3078 + 27 = 3105
Step 116: 3105 + 27 = 3132
Step 117: 3132 + 27 = 3159
Step 118: 3159 + 27 = 3186
Step 119: 3186 + 27 = 3213
Step 120: 3213 + 27 = 3240
Step 121: 3240 + 27 = 3267
Step 122: 3267 + 27 = 3294
Step 123: 3294 + 27 = 3321
Step 124: 3321 + 27 = 3348
Step 125: 3348 + 27 = 3375
Step 126: 3375 + 27 = 3402
Step 127: 3402 + 27 = 3429
Step 128: 3429 + 27 = 3456
Step 129: 3456 + 27 = 3483
Step 130: 3483 + 27 = 3510
Step 131: 3510 + 27 = 3537
Step 132: 3537 + 27 = 3564
Step 133: 3564 + 27 = 3591
Step 134: 3591 + 27 = 3618
Step 135: 3618 + 27 = 3645
Step 136: 3645 + 27 = 3672
Step 137: 3672 + 27 = 3699
Step 138: 3699 + 27 = 3726
Step 139: 3726 + 27 = 3753
Step 140: 3753 + 27 = 3780
Step 141: 3780 + 27 = 3807
Step 142: 3807 + 27 = 3834
Step 143: 3834 + 27 = 3861
Step 144: 3861 + 27 = 3888
Step 145: 3888 + 27 = 3915
Step 146: 3915 + 27 = 3942
Step 147: 3942 + 27 = 3969
Step 148: 3969 + 27 = 3996
Step 149: 3996 + 27 = 4023
Step 150: 4023 + 27 = 4050
Step 151: 4050 + 27 = 4077
Step 152: 4077 + 27 = 4104
Step 153: 4104 + 27 = 4131
Step 154: 4131 + 27 = 4158
Step 155: 4158 + 27 = 4185
Step 156: 4185 + 27 = 4212
Step 157: 4212 + 27 = 4239
Step 158: 4239 + 27 = 4266
Step 159: 4266 + 27 = 4293
Step 160: 4293 + 27 = 4320
Step 161: 4320 + 27 = 4347
Step 162: 4347 + 27 = 4374
Step 163: 4374 + 27 = 4401
Step 164: 4401 + 27 = 4428
Step 165: 4428 + 27 = 4455
Step 166: 4455 + 27 = 4482
Step 167: 4482 + 27 = 4509
Step 168: 4509 + 27 = 4536
Step 169: 4536 + 27 = 4563
Step 170: 4563 + 27 = 4590
Step 171: 4590 + 27 = 4617
Step 172: 4617 + 27 = 4644
Step 173: 4644 + 27 = 4671
Step 174: 4671 + 27 = 4698
Step 175: 4698 + 27 = 4725
Step 176: 4725 + 27 = 4752
Step 177: 4752 + 27 = 4779
Step 178: 4779 + 27 = 4806
Step 179: 4806 + 27 = 4833
Step 180: 4833 + 27 = 4860
Step 181: 4860 + 27 = 4887
Step 182: 4887 + 27 = 4914
Step 183: 4914 + 27 = 4941
Step 184: 4941 + 27 = 4968
Step 185: 4968 + 27 = 4995
Step 186: 4995 + 27 = 5022
Step 187: 5022 + 27 = 5049
Step 188: 5049 + 27 = 5076
Step 189: 5076 + 27 = 5103
Step 190: 5103 + 27 = 5130
Step 191: 5130 + 27 = 5157
Step 192: 5157 + 27 = 5184
Step 193: 5184 + 27 = 5211
Step 194: 5211 + 27 = 5238
Step 195: 5238 + 27 = 5265
Step 196: 5265 + 27 = 5292
Step 197: 5292 + 27 = 5319
Step 198: 5319 + 27 = 5346
Step 199: 5346 + 27 = 5373
Step 200: 5373 + 27 = 5400
Step 201: 5400 + 27 = 5427
Step 202: 5427 + 27 = 5454
Step 203: 5454 + 27 = 5481
Step 204: 5481 + 27 = 5508
Step 205: 5508 + 27 = 5535
Step 206: 5535 + 27 = 5562
Step 207: 5562 + 27 = 5589
Step 208: 5589 + 27 = 5616
Step 209: 5616 + 27 = 5643
Step 210: 5643 + 27 = 5670
Step 211: 5670 + 27 = 5697
Step 212: 5697 + 27 = 5724
Step 213: 5724 + 27 = 5751
Step 214: 5751 + 27 = 5778
Step 215: 5778 + 27 = 5805
Step 216: 5805 + 27 = 5832
Step 217: 5832 + 27 = 5859
Step 218: 5859 + 27 = 5886
Step 219: 5886 + 27 = 5913
Step 220: 5913 + 27 = 5940
Step 221: 5940 + 27 = 5967
Step 222: 5967 + 27 = 5994
Step 223: 5994 + 27 = 6021
Step 224: 6021 + 27 = 6048
Step 225: 6048 + 27 = 6075
Step 226: 6075 + 27 = 6102
Step 227: 6102 + 27 = 6129
Step 228: 6129 + 27 = 6156
Step 229: 6156 + 27 = 6183
Step 230: 6183 + 27 = 6210
Step 231: 6210 + 27 = 6237
Step 232: 6237 + 27 = 6264
Step 233: 6264 + 27 = 6291
Step 234: 6291 + 27 = 6318
Step 235: 6318 + 27 = 6345
Step 236: 6345 + 27 = 6372
Step 237: 6372 + 27 = 6399
Step 238: 6399 + 27 = 6426
Step 239: 6426 + 27 = 6453
Step 240: 6453 + 27 = 6480
Step 241: 6480 + 27 = 6507
Step 242: 6507 + 27 = 6534
Step 243: 6534 + 27 = 6561
Step 244: 6561 + 27 = 6588
Step 245: 6588 + 27 = 6615
Step 246: 6615 + 27 = 6642
Step 247: 6642 + 27 = 6669
Step 248: 6669 + 27 = 6696
Step 249: 6696 + 27 = 6723
Step 250: 6723 + 27 = 6750
Step 251: 6750 + 27 = 6777
Step 252: 6777 + 27 = 6804
Step 253: 6804 + 27 = 6831
Step 254: 6831 + 27 = 6858
Step 255: 6858 + 27 = 6885
Step 256: 6885 + 27 = 6912
Step 257: 6912 + 27 = 6939
Step 258: 6939 + 27 = 6966
Step 259: 6966 + 27 = 6993
Step 260: 6993 + 27 = 7020
Step 261: 7020 + 27 = 7047
Step 262: 7047 + 27 = 7074
Step 263: 7074 + 27 = 7101
Step 264: 7101 + 27 = 7128
Step 265: 7128 + 27 = 7155
Step 266: 7155 + 27 = 7182
Step 267: 7182 + 27 = 7209
Step 268: 7209 + 27 = 7236
Step 269: 7236 + 27 = 7263
Step 270: 7263 + 27 = 7290
Step 271: 7290 + 27 = 7317
Step 272: 7317 + 27 = 7344
Step 273: 7344 + 27 = 7371
Step 274: 7371 + 27 = 7398
Step 275: 7398 + 27 = 7425
Step 276: 7425 + 27 = 7452
Step 277: 7452 + 27 = 7479
Step 278: 7479 + 27 = 7506
Step 279: 7506 + 27 = 7533
Step 280: 7533 + 27 = 7560
Step 281: 7560 + 27 = 7587
Step 282: 7587 + 27 = 7614
Step 283: 7614 + 27 = 7641
Step 284: 7641 + 27 = 7668
Step 285: 7668 + 27 = 7695
Step 286: 7695 + 27 = 7722
Step 287: 7722 + 27 = 7749
Step 288: 7749 + 27 = 7776
Step 289: 7776 + 27 = 7803
Step 290: 7803 + 27 = 7830
Step 291: 7830 + 27 = 7857
Step 292: 7857 + 27 = 7884
Step 293: 7884 + 27 = 7911
Step 294: 7911 + 27 = 7938
Step 295: 7938 + 27 = 7965
Step 296: 7965 + 27 = 7992
Step 297: 7992 + 27 = 8019
Step 298: 8019 + 27 = 8046
Step 299: 8046 + 27 = 8073
Step 300: 8073 + 27 = 8100
Step 301: 8100 + 27 = 8127
Step 302: 8127 + 27 = 8154
Step 303: 8154 + 27 = 8181
Step 304: 8181 + 27 = 8208
Step 305: 8208 + 27 = 8235
Step 306: 8235 + 27 = 8262
Step 307: 8262 + 27 = 8289
Step 308: 8289 + 27 = 8316
Step 309: 8316 + 27 = 8343
Step 310: 8343 + 27 = 8370
Step 311: 8370 + 27 = 8397
Step 312: 8397 + 27 = 8424
Step 313: 8424 + 27 = 8451
Step 314: 8451 + 27 = 8478
Step 315: 8478 + 27 = 8505
Step 316: 8505 + 27 = 8532
Step 317: 8532 + 27 = 8559
Step 318: 8559 + 27 = 8586
Step 319: 8586 + 27 = 8613
Step 320: 8613 + 27 = 8640
Step 321: 8640 + 27 = 8667
Step 322: 8667 + 27 = 8694
Step 323: 8694 + 27 = 8721
Step 324: 8721 + 27 = 8748
Step 325: 8748 + 27 = 8775
Step 326: 8775 + 27 = 8802
Step 327: 8802 + 27 = 8829
Step 328: 8829 + 27 = 8856
Step 329: 8856 + 27 = 8883
Step 330: 8883 + 27 = 8910
Step 331: 8910 + 27 = 8937
Step 332: 8937 + 27 = 8964
Step 333: 8964 + 27 = 8991
Step 334: 8991 + 27 = 9018
Step 335: 9018 + 27 = 9045
Step 336: 9045 + 27 = 9072
Step 337: 9072 + 27 = 9099
Step 338: 9099 + 27 = 9126
Step 339: 9126 + 27 = 9153
Step 340: 9153 + 27 = 9180
Step 341: 9180 + 27 = 9207
Step 342: 9207 + 27 = 9234
Step 343: 9234 + 27 = 9261
Step 344: 9261 + 27 = 9288
Step 345: 9288 + 27 = 9315
Step 346: 9315 + 27 = 9342
Step 347: 9342 + 27 = 9369
Step 348: 9369 + 27 = 9396
Step 349: 9396 + 27 = 9423
Step 350: 9423 + 27 = 9450
Step 351: 9450 + 27 = 9477
Step 352: 9477 + 27 = 9504
Step 353: 9504 + 27 = 9531
Step 354: 9531 + 27 = 9558
Step 355: 9558 + 27 = 9585
Step 356: 9585 + 27 = 9612
Step 357: 9612 + 27 = 9639
Step 358: 9639 + 27 = 9666
Step 359: 9666 + 27 = 9693
Step 360: 9693 + 27 = 9720
Step 361: 9720 + 27 = 9747
Step 362: 9747 + 27 = 9774
Step 363: 9774 + 27 = 9801
Step 364: 9801 + 27 = 9828
Step 365: 9828 + 27 = 9855
Step 366: 9855 + 27 = 9882
Step 367: 9882 + 27 = 9909
Step 368: 9909 + 27 = 9936
Step 369: 9936 + 27 = 9963
Step 370: 9963 + 27 = 9990
Step 371: 9990 + 27 = 10017
Step 372: 10017 + 27 = 10044
Step 373: 10044 + 27 = 10071
Step 374: 10071 + 27 = 10098
Step 375: 10098 + 27 = 10125
Step 376: 10125 + 27 = 10152
Step 377: 10152 + 27 = 10179
Step 378: 10179 + 27 = 10206
Step 379: 10206 + 27 = 10233
Step 380: 10233 + 27 = 10260
Step 381: 10260 + 27 = 10287
Step 382: 10287 + 27 = 10314
Step 383: 10314 + 27 = 10341
Step 384: 10341 + 27 = 10368
Step 385: 10368 + 27 = 10395
Step 386: 10395 + 27 = 10422
Step 387: 10422 + 27 = 10449
Step 388: 10449 + 27 = 10476
Step 389: 10476 + 27 = 10503
Step 390: 10503 + 27 = 10530
Step 391: 10530 + 27 = 10557
Step 392: 10557 + 27 = 10584
Step 393: 10584 + 27 = 10611
Step 394: 10611 + 27 = 10638
Step 395: 10638 + 27 = 10665
Step 396: 10665 + 27 = 10692
Step 397: 10692 + 27 = 10719
Step 398: 10719 + 27 = 10746
Step 399: 10746 + 27 = 10773
Step 400: 10773 + 27 = 10800
Step 401: 10800 + 27 = 10827
Step 402: 10827 + 27 = 10854
Step 403: 10854 + 27 = 10881
Step 404: 10881 + 27 = 10908
Step 405: 10908 + 27 = 10935
Step 406: 10935 + 27 = 10962
Step 407: 10962 + 27 = 10989
Step 408: 10989 + 27 = 11016
Step 409: 11016 + 27 = 11043
Step 410: 11043 + 27 = 11070
Step 411: 11070 + 27 = 11097
Step 412: 11097 + 27 = 11124
Step 413: 11124 + 27 = 11151
Step 414: 11151 + 27 = 11178
Step 415: 11178 + 27 = 11205

So, 27*415 = 11205